<!--
 * @Author: zi.yang
 * @Date: 2021-04-01 07:14:21
 * @LastEditors: zi.yang
 * @LastEditTime: 2021-04-30 11:57:34
 * @Description: In User Settings Edit
 * @FilePath: \vue-travel\src\components\city\Search.vue
-->
<template>
  <div>
    <div class="search">
      <input
        v-model="keyword"
        type="text"
        class="search-input"
        placeholder="输入城市名或拼音"
      />
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{ item.name }}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配的数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll';
import { mapMutations } from 'vuex';
export default {
  name: 'CitySearch',
  props: {
    cities: Object,
  },
  data() {
    return {
      keyword: '',
      timer: null,
      list: [],
    };
  },
  mounted() {
    const time = setTimeout(() => {
      this.scroll = new Bscroll(this.$refs.search, {});
      clearTimeout(time);
    }, 500);
  },
  methods: {
    handleCityClick(city) {
      // this.$store.commit('changeCity', city);
      this.changeCity(city);
      this.$router.push('/');
    },
    // vuex 提供操作 mutations 的 API,通过 mapMutations 直接获取 mutation
    // this.$store.commit('mutation', arg) 简化为 this.mutatinon(arg);
    ...mapMutations(['changeCity']),
  },
  computed: {
    hasNoData() {
      return !this.list.length;
    },
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (!this.keyword) {
        this.list = [];
        return;
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (
              value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1
            ) {
              result.push(value);
            }
          });
        }
        this.list = result;
        clearTimeout(this.timer);
      }, 100);
    },
  },
};
</script>

<style lang="stylus" scoped>
@import '~@styles/varibles.styl';
.search
  height .72rem
  padding 0 .1rem
  background $bgColor
  .search-input
    box-sizing border-box
    width 100%
    height .62rem
    padding 0 .1rem
    line-height .62rem
    text-align center
    border-radius .06rem
    color #666
.search-content
  z-index 1
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  background #eee
  .search-item
    line-height .62rem
    padding-left .2rem
    background #fff
    color #666
</style>
